Reader Pierre Brennan-Gauthier is plagued by a “No, not the blues guy of the same name” howling wolf. He writes:
Every now and then at random times I hear the sound of a howling wolf coming out of my MacBook Pro. I have no login applications activated nor do I have anything suspicious. No joking, the sound of a howling wolf comes crying out of my speakers on my Mac. Can it be a widget? Could it be Firefox that awakens? I’ve had a Mac since 20 years now and this has never happened to me.
And it’s probably never happened before because Tastyapp’s free widget-based digital pet, Flappie, was born only recently.
Yep, that’s the source of your howling wolf. Apparently, when Flappie believes the end of the day approaches the wolf starts howling. If you got up early enough you might also hear Flappie’s “dawn” sound, which is the crowing of a rooster.
You might be able to make it stop by Control-clicking on the Flappie widget (found at ~/Library/Widgets), choosing Show Package Contents, and, from the resulting Flappie window, removing the Dusk.wav sound from the Sounds folder.